| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Premiere Technologies (United Kingdom) Ltd | 03756439 | 21/09/2000 | Dissolved |
| Ptek Communications Ltd | 03787435 | 21/09/2000 | Dissolved |
| XCELERON LIMITED | 03216427 | 17/09/2009 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMDOCS BCS (UK) LIMITED | 02322632 | 12/08/1992 | 26/01/1996 | Dissolved |
| AMS SCIENCES LIMITED | 07832772 | 24/01/2012 | 23/07/2013 | Dissolved |
| Comwave (U K) Ltd | 01934404 | 15/02/2000 | 12/12/2000 | Dissolved |
| Comwave (U K) Ltd | 01934404 | 14/05/1998 | 22/08/2003 | Dissolved |
| Connaught Commercial Services Ltd | 03103596 | 22/03/1996 | 12/12/2000 | Dissolved |
| Connaught Commercial Services Ltd | 03103596 | 01/09/1999 | 22/08/2003 | Dissolved |
| PREMIERE GLOBAL SERVICES (GB) LIMITED | 03406448 | 04/10/1999 | 12/12/2000 | Dissolved |
| PREMIERE GLOBAL SERVICES (GB) LIMITED | 03406448 | 05/01/2000 | 22/08/2003 | Dissolved |
| Premiere Technologies (United Kingdom) Ltd | 03756439 | 21/09/2000 | 12/12/2000 | Dissolved |
| Ptek Communications Ltd | 03787435 | 15/02/2000 | 15/02/2000 | Dissolved |
| Transmit International Ltd | 02634762 | 01/03/1999 | 12/12/2000 | Dissolved |
| Transmit International Ltd | 02634762 | 05/01/2000 | 22/08/2003 | Dissolved |
| Vitel Ltd | 01283026 | 15/02/2000 | 12/12/2000 | Dissolved |
| Vitel Ltd | 01283026 | 14/05/1998 | 22/08/2003 | Dissolved |
| WHITE LODGE INVESTIGATIONS LIMITED | 05088120 | 30/03/2004 | 28/09/2013 | Dissolved |
| XPEDITE SYSTEMS (UK) LIMITED | 02778084 | 17/03/1998 | 12/12/2000 | Dissolved |
| XPEDITE SYSTEMS (UK) LIMITED | 02778084 | 22/04/1999 | 22/08/2003 | Dissolved |